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need some suggestions for a 350 engine im building

  
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need some suggestions for a 350 engine im building

 
royrois royrois
New User | Posts: 6 | Joined: 06/13
Posted: 06/14/13
09:42 PM

hello everyone,

im new to this engine rebuilding stuff. this is my first attempt and i would take this opportunity to learn from it. all the help and suggestion will really be appreciated.

im planning to build a 350 engine for my daily driver but a little improved power would also be nice. also i would like to keep the cost at a minimum. here are the info:
- going to be a daily driver engine
- saginaw 4 speed manual transmission (which i will temporarily use until it breaks)
- measured the rear end ratio to be 3.24
- block casting number 3970010 (2 bolt main)
- head casting number 14022601 (which i think is still usable)
- standard 4 inch bore. i am going for a 0.030 oversize engine rebuild kit
- going for a new HEI distributor, carburetor, intake manifold, serpentine kit
- im planning on replacing the camshaft and lifters but I have no idea which should i get

any suggestions, recommendations or tips on how to go through with my project?  

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 06/15/13
04:52 AM

royrois welcome to CHP.

Jegs or SummitRacing have rebuild kits that you can get what you need for parts.

1.Start off by getting the engine to a reputible machine shop.
2.Have the engine cleaned, and make sure all the cam bearings are
removed first and all galley plugs. Make sure the crank is measured
and then if it does not need any major work have the journals polished.
3.Have the machine shop measure the bore for wear.This will determine
if you need an over-bore or not. You mentioned an over-bore which is
always a good idea.
4. I strongly recommend the followingFrownNOTE: HAVE THE ENGINE TORQUE
PLATE HONED) THIS stresses the block as if you had the heads on it.
4A. Have the engine assembly balanced. Give the balance shop all the
rotating components. IE your clutch and pressure plate also.
5.The heads see what they need for rebuilding. The cost of having any
head work done can Sky Rocket. Sometime a performance head can be bought
almost near the price of a good head rebuild.

I don't know if you want the expense of a Hydraulic Roller Cam? But this
is the way things are going today. They cost quite a bit more, but the break-
in procedure is easier on all the components.
As far as the cam specs. I would purchase the cam last.

Bob  

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 06/15/13
09:24 PM

Hi there,
Are you looking at more than 9.1/1 compression?  
skyeking

royrois royrois
New User | Posts: 6 | Joined: 06/13
Posted: 06/15/13
11:57 PM

yeah im going to send it to a machine shop and have them measure the journals before buying the rebuild kit. as for compression ratio, i really have no idea. i still got a lot to learn. my initial plans is for an oversize piston probably 0.03 rebuild kit with matching journal measurement from the machine shop. i will have the heads checked and cleaned also. then thats it. i dont know if there are other things i should consider  Confused  

p2-72chevelle383 p2-72chevelle383
Guru | Posts: 1757 | Joined: 08/09
Posted: 06/16/13
10:02 AM

10.1 compression 383 stroker. Mid 220 to mid 230 duration with high 400 to low 500 lift cam.650 cfm carb. Basic 400+hp street sbc  
p2-72chevelle383

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 06/16/13
04:48 PM

Hi Agent p2-72 and the gang..
224 roller ball.  
skyeking

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 06/16/13
09:48 PM

I agree Skyeking:

Anything over in reality 230* duration is troublesome. You'll need a higher stall convertor,and lower (Numerically) rear gears.

Stay within the 224*-226* duration intake and exhaust and .450 lift you can use stock parts.

Bob  

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 06/17/13
12:04 AM

Hi there people,
Hi Poncho man.
Nearly missed your post.
You guys will have to think of
sumthink to put on my headstone
in the next 5 months..
 Frankly my boy I don't give a damn.

 Quote..." There are none more fierce
of/with volition than one who has Nothing
left to lose."
Good to see you still vertical.Good luck
to you and all the others.
Have you heard from that olde Skybuzzard??  
skyeking

royrois royrois
New User | Posts: 6 | Joined: 06/13
Posted: 06/18/13
11:08 PM

i've been doing a lot of reading lately and decided to go for a 383 stroker kit for my 350. i'm planning on getting a 383 stroker kit. any suggestions where can i find a good deal? my 350 has only 2 bolt mains on it will this work for me? i also came across balancing issues and i'm really confused.  

redneckjoe69 redneckjoe69
Addict | Posts: 2337 | Joined: 03/10
Posted: 06/19/13
01:44 AM

this company sells various different 383 kits.    they claim to be balanced at theyre shop.    
http://www.skipwhiteperformance.com/detail.aspx?Item=3832P-2230

  i'd get the block off to the machine shop before ordering any parts.   make sure the block is o.k. and you'll need the final bore dimension before you order anyway.  

68scott385 68scott385
Guru | Posts: 1990 | Joined: 10/09
Posted: 06/19/13
09:12 AM

When I built my stroker I bought the crank, rods, piston, flexplate, and balancer all from the same supplier and had them balance it all. A balance card was included with the kit. I highly suggest doing the same for you, it eliminates compatibility problems that may arise from sourcing the seperate parts from different suppliers.

You may be able to get a good deal on a stroker kit through your machine shop too. Machinists deal with suppliers on a regular basis and many times can get a better deal on parts than what an individual can get. The machinist will also know what parts work together best with a minimum of machining.  
68scott385 68scott385 68scott385

royrois royrois
New User | Posts: 6 | Joined: 06/13
Posted: 06/19/13
05:28 PM

i came across a rotating kit from Eagle and it is internally balanced. my concern now is clearance issues. i also read that a 2 bolt main has a smaller main bearing than a 4 bolt main block, is this true?  

tuffnuff tuffnuff
Moderator | Posts: 7827 | Joined: 12/09
Posted: 06/19/13
06:17 PM

Not true, main journals are the same size for 2 and 4 bolt blocks.

Smile  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

Pontiacman2 Pontiacman2
Moderator | Posts: 8956 | Joined: 09/08
Posted: 06/20/13
05:34 AM

+1 tuff they are the same.  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

tuffnuff tuffnuff
Moderator | Posts: 7827 | Joined: 12/09
Posted: 06/20/13
10:10 AM

Icon Quoteroyrois:
i came across a rotating kit from Eagle and it is internally balanced. my concern now is clearance issues. i also read that a 2 bolt main has a smaller main bearing than a 4 bolt main block, is this true?

You may need to do some clearance grinding in these areas.

383Blockgrinding

400 rods are 5.56" and different than your 350 rods 5.7" so a small base circle cam is usually required.

400Vs350rod

Smile  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

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